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Keyboards are of course hardware devices, but there is little hardware in the PC that
does not interface directly with the operating system or other software. Software features
control certain aspects of how the keyboard works, and it's useful to understand what
these are, so I decided to discuss these matters here.

In this section I take a look at various issues related to software control and
operation of the keyboard. This includes a discussion of DOS keyboard controls, a look at
Windows keyboard layouts and multiple language support, and also the "typematic"
feature. I then discuss accessibility features, and talk about BIOS controls and ASCII
code generation.